Lifting opening bridge and damping support
By designing vibration-damping supports with cylindrical and spherical rotating joint structures, the multi-directional vibration and stability problems of the lifting-type opening bridge were solved, achieving multi-directional vibration reduction and stability after separation, thus improving the vibration reduction effect and structural durability of the beam.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- LUOYANG SUNRUI SPECIAL EQUIP
- Filing Date
- 2022-12-26
- Publication Date
- 2026-07-14
AI Technical Summary
Existing lift-type opening bridges have difficulty achieving effective vibration reduction when the beam vibrates in multiple directions, and the vibration reduction supports are prone to losing stability after the beam leaves.
Design a vibration damping support comprising an upper support plate, a rotating plate, an upper piston plate, a lower piston plate, a fixed plate, and a lower support plate. Multi-directional vibration damping is achieved through a cylindrical and spherical rotating pair structure, and stability is maintained when the beam separates from the support. Tensile structure and limiting rod are used to enhance stability.
It effectively reduces the vibration frequency of the beam in multiple directions, extends the structural period, ensures the stability of the beam after it leaves the support, and improves the vibration reduction effect and structural durability.
Smart Images
Figure CN116005543B_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of bridge vibration reduction technology, and more specifically, relates to a lift-type opening bridge and vibration reduction bearing. Background Technology
[0002] A movable bridge is a bridge whose beam structure can be opened and closed for navigation purposes. When a fixed bridge cannot be built above the navigation clearance and there are ships navigating the river, a movable bridge is needed to meet the needs of water and land transportation. Movable bridges can be divided into three main categories according to the way their beams open and close: horizontal rotation, lifting, and vertical rotation. Horizontal rotation movable bridges allow the beams to rotate in a plane to open and close; the Jintang Bridge is a typical example. Lifting movable bridges allow the beams to be lifted vertically to open and close; the Tanggu Haimen Bridge is a typical example. Vertical rotation movable bridges allow the beams to rotate vertically to open and close; the Jiefang Bridge is a typical example. Because lifting movable bridges open and close by lifting the beams, they are easier and safer than horizontal and vertical rotation type bridges, and more and more movable bridges are being designed as lifting type.
[0003] The existing patents have the following specific problems:
[0004] Due to their stress and geometric characteristics, bridge beams are prone to vibration when subjected to factors such as strong winds, earthquakes, and traffic loads. In existing patents, fixed bridges use vibration damping bearings pressed against the beams, which then dampen the beams through movable components. However, in lift-type opening bridges, the beams need to be lifted to open and close. Thus, when the beams leave the vibration damping bearings, the bearings are prone to instability due to the lack of pressure. Furthermore, existing vibration damping bearings can only meet the vibration damping requirements in the transverse direction, making it difficult to achieve vibration damping when the beams are subjected to vibrations in multiple directions.
[0005] Therefore, based on the above requirements, there is an urgent need for a vibration damping device that can reduce vibration in multiple directions and maintain stability even after the beam has moved away. Summary of the Invention
[0006] In view of the above-mentioned defects or improvement needs of the existing technology, the present invention provides a lifting-type opening bridge vibration reduction bearing, which can achieve vibration reduction in multiple directions when in contact with the beam and maintain stability when separated from the beam.
[0007] To achieve the above objectives, the present invention provides a lifting-type opening bridge vibration damping support, comprising an upper support plate, a rotating plate, an upper piston plate, a lower piston plate, a fixed plate, and a lower support plate connected in sequence. The rotating plate has a recessed cavity on the side near the upper support plate, which is used to accommodate an elastic buffer. The upper support plate has an insertion end for inserting into the cavity. The rotating plate has a recessed cylindrical surface on the side away from the upper support plate, and the generatrix of the recessed cylindrical surface of the rotating plate extends in the transverse bridge direction. The upper piston plate has a convex cylindrical surface on the side near the rotating plate that cooperates with it. The rotating plate and the upper piston plate constitute the first cylindrical surface of the lifting-type opening bridge vibration damping support. The upper piston plate is recessed on the side away from the rotating plate to form a concave spherical surface, and the lower piston plate is convex on the side near the upper piston plate to form a convex spherical surface. The area of the concave spherical surface of the upper piston plate is smaller than the area of the convex spherical surface of the lower piston plate. The upper piston plate and the lower piston plate constitute the first spherical rotational friction pair of the lifting-type opening bridge vibration damping support. The fixed plate is recessed on the side away from the lower support plate to form a concave cylindrical surface. The generatrix of the concave cylindrical surface of the fixed plate extends in the direction along the bridge. The lower piston plate is provided with a convex cylindrical surface that cooperates with it on the side near the fixed plate. The fixed plate and the lower piston plate constitute the second cylindrical rotational pair of the lifting-type opening bridge vibration damping support.
[0008] The tensile structure has two types, which are respectively located on the periphery and inside of the lifting-type opening bridge vibration damping support.
[0009] In one embodiment, a limiting rod extends downward from the side of the upper piston plate near the lower piston plate. The lower piston plate is provided with a limiting hole, and the diameter of the limiting hole is larger than the diameter of the limiting rod. The limiting hole penetrates the lower piston plate to form a limiting cavity, and the limiting rod is used to insert into the limiting cavity.
[0010] In one embodiment, a connecting disc is threaded to one end of the limiting rod near the lower piston plate. The diameter of the connecting disc is larger than the diameter of the limiting hole. The limiting rod and the connecting disc form a tensile structure.
[0011] The lower piston plate has a rotating cavity, which partially penetrates the lower piston plate and forms an opening on the side of the lower piston plate away from the upper piston plate. The diameter of the opening is larger than the diameter of the connecting disc. The rotating cavity has a rotating wall, which is located close to the upper piston plate. The limiting hole penetrates the rotating wall to enable communication between the rotating cavity and the limiting cavity. The connecting disc can rotate on the rotating wall.
[0012] In one embodiment, the rotating wall is recessed towards the upper piston plate to form a concave spherical surface, and the connecting disc has a convex spherical surface adapted to the rotating wall, and the spherical area of the connecting disc is smaller than the spherical area of the rotating wall. The rotating wall and the connecting disc constitute the second spherical rotational friction pair of the lifting-type opening bridge vibration damping support.
[0013] In one embodiment, the tensile structure includes two first side plates disposed on the rotating plate and two first mating plates disposed on the upper piston plate. The first side plates are L-shaped, and the two first side plates are respectively connected to both sides of the rotating plate along the bridge direction, with the openings of the two first side plates facing the inner side of the rotating plate. The first mating plates protrude from both sides of the upper piston plate along the bridge direction toward the outer side of the upper piston plate. The connecting surface between the first side plates and the first mating plates is cylindrical. The first side plates and the first mating plates constitute the third cylindrical rotating pair of the lifting-type opening bridge vibration damping support.
[0014] The tensile structure further includes two second side plates on the fixed plate and two second mating plates on the lower piston plate. The first side plate is Г-shaped. The two second side plates are respectively connected to both sides of the fixed plate in the transverse bridge direction, and the openings of the two first side plates face the inside of the rotating plate. The second mating plates protrude from both sides of the lower piston plate in the transverse bridge direction toward the outside of the upper piston plate. The connecting surface of the second side plate and the second mating plate is cylindrical. The second side plate and the second mating plate constitute the fourth cylindrical rotating pair of the lifting-type opening bridge vibration damping support.
[0015] In one embodiment, the lifting-type opening bridge vibration damping support is further provided with wear-resistant plates. The wear-resistant plates include cylindrical wear-resistant plates and spherical wear-resistant plates. There are four cylindrical wear-resistant plates, which are respectively disposed at the connection points of the first cylindrical rotating joint, the second cylindrical rotating joint, the third cylindrical rotating joint, and the fourth cylindrical rotating joint. There are two spherical wear-resistant plates, which are respectively disposed at the connection points of the first spherical rotating joint and the second spherical rotating joint.
[0016] In one embodiment, the wear-resistant plate is made of modified polyethylene.
[0017] In one embodiment, the elastic buffer is made of rubber.
[0018] In one embodiment, the lifting-type opening bridge vibration damping support is further provided with a beam connecting plate, which is fixedly connected to the beam, and the side of the beam connecting plate facing away from the beam is set as a rough surface.
[0019] The present invention also provides a lifting-type opening bridge, including a beam and a lifting-type opening bridge vibration damping support as described in any one of the above claims, wherein the lifting-type opening bridge vibration damping support supports the beam.
[0020] In summary, compared with the prior art, the above-described technical solutions conceived by this invention can achieve the following beneficial effects:
[0021] 1. The lifting-type opening bridge vibration damping support of the present invention has a concave cylindrical surface formed on one side of the rotating plate and a convex cylindrical surface formed on the side of the upper piston plate connected to the rotating plate. The generatrices of the concave cylindrical surface of the rotating plate and the convex cylindrical surface of the upper piston plate extend in the transverse bridge direction, so that the rotating plate can rotate on the upper piston plate in the longitudinal bridge direction. Correspondingly, a concave cylindrical surface formed on one side of the fixed plate and a convex cylindrical surface formed on the side of the lower piston plate connected to the fixed plate, with the generatrices of the concave cylindrical surface of the fixed plate and the convex cylindrical surface of the lower piston plate extending in the longitudinal bridge direction, so that the lower piston plate can rotate on the fixed plate in the transverse bridge direction. While the rotating plate and the lower piston plate are rotating, kinetic energy can be converted into potential energy, thereby extending the structural period of the lifting-type opening bridge vibration damping support. At the same time, the lower piston plate can reset after the external force disappears.
[0022] 2. The lifting-type opening bridge vibration damping support of the present invention sets the upper piston plate and the lower piston plate as spherical connections to meet the rotation requirements of the upper piston plate in all directions. At the same time, the convex surfaces of the lower piston plate and the upper piston plate are set in the same direction. Thus, when the upper piston plate rotates to the lowest point of the lower piston plate, the rotating plate rotates towards the side away from the upper piston plate, and the height of the side of the rotating plate away from the upper piston plate is higher than the height of the side of the rotating plate close to the upper piston plate. After the external force disappears, under the action of potential energy, the heights of both sides of the rotating plate are consistent. At this time, the upper piston plate can rotate to the highest point of the lower piston plate to realize the reset of the rotating plate and the upper piston plate.
[0023] 3. The present invention limits the upper piston plate by setting a limiting rod and a connecting disc inside the lifting-type opening bridge vibration damping support, and sets a first side plate, a first mating plate, a second side plate and a second mating plate on the periphery of the lifting-type opening bridge vibration damping support to limit the rotating plate and the lower piston plate respectively, forming multi-point tensile resistance, and still having stability after the beam is separated from the lifting-type opening bridge vibration damping support.
[0024] 4. The lifting-type opening bridge vibration damping support of the present invention extends a limiting rod and a connecting disc on the upper piston plate, thereby limiting the upper piston plate and increasing the rotational inertia of the upper piston plate, so as to improve the rotational period of the lifting-type opening bridge and thus improve the vibration damping effect. Attached Figure Description
[0025] Figure 1 This is an exploded view of a lifting-type opening bridge vibration damping support according to an embodiment of the present invention;
[0026] Figure 2 This is another exploded view of a lifting-type opening bridge vibration damping support according to an embodiment of the present invention;
[0027] Figure 3 This is a longitudinal cross-sectional view of a lifting-type opening bridge vibration damping support according to an embodiment of the present invention;
[0028] Figure 4 This is a cross-sectional view of a lifting-type opening bridge vibration damping support according to an embodiment of the present invention.
[0029] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically:
[0030] 10. Lift-type opening bridge vibration damping bearing; 11. Upper bearing plate; 111. Insertion end; 12. Rotating plate; 121. Receiving cavity; 13. Upper piston plate; 14. Lower piston plate; 141. Limiting hole; 142. Limiting cavity; 143. Rotating cavity; 1431. Opening; 1432. Rotating wall; 15. Fixing plate; 16. Lower bearing plate; 17. Tensile structure; 171. Limiting rod; 172. Connecting disc; 173. First side plate; 174. First mating plate; 175. Second side plate; 176. Second mating plate; 18. Wear-resistant plate; 181. Cylindrical wear-resistant plate; 182. Spherical wear-resistant plate; 19. Beam connecting plate. Detailed Implementation
[0031] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.
[0032] The present invention provides a lifting-type opening bridge vibration damping support 10.
[0033] Please refer to Figure 1 and Figure 2 As shown, the lifting-type opening bridge vibration damping support 10 includes an upper support plate 11, a rotating plate 12, an upper piston plate 13, a lower piston plate 14, a fixed plate 15, and a lower support plate 16 connected in sequence.
[0034] Specifically, the upper support plate 11 is connected to the beam body via the beam connecting plate 19, and the lower support plate 16 is used to connect to the base. The lower support plate 16 is welded to the base to achieve a fixed connection with the base, which consists of four columns. The lower support plate 16 is connected to the abutment via the four columns.
[0035] The rotating plate 12 has a recessed cavity 121 near the upper support plate 11, which is used to accommodate the elastic buffer. The upper support connecting plate has an insertion end 111 for inserting into the cavity 121. It is easy to understand that by placing the elastic buffer, the vibration amplitude of the upper support plate 11 in the vertical direction of the bridge can be reduced to avoid damage to the bridge. At the same time, it can buffer the beam during the lowering and opening process of the lifting-type opening bridge. Placing the elastic buffer in the cavity 121 can, on the one hand, position the elastic buffer to prevent it from being ejected by force, and on the other hand, prevent the beam from being subjected to planar shear force during the lowering and opening process, which would damage the elastic buffer. At the same time, inserting the insertion end 111 of the upper support plate 11 into the cavity 121 makes it difficult for the upper support plate 11 to separate from the rotating plate 12.
[0036] The rotating plate 12 has a concave cylindrical surface on the side facing away from the upper support plate 11. The generatrix of the concave cylindrical surface of the rotating plate 12 extends in the transverse bridge direction. The upper piston plate 13 has a convex cylindrical surface that mates with the rotating plate 12 on the side close to it. The rotating plate 12 and the upper piston plate 13 constitute the first cylindrical rotating pair of the lifting-type opening bridge vibration damping support 10. Specifically, the upper piston plate 13 protrudes towards the rotating plate 12 to form a convex cylindrical surface, and the generatrix of the convex cylindrical surface of the upper piston plate 13 extends in the transverse bridge direction. That is, the radial rotation direction of the rotating plate 12 on the upper piston plate 13 is in the longitudinal bridge direction. In actual use, when an earthquake occurs, the bridge is subjected to a force in the longitudinal bridge direction. The rotating plate 12 can rotate relative to the upper piston plate 13 in the longitudinal bridge direction under the action of inertia to resist the vibration in the longitudinal bridge direction. At the same time, the rotating plate 12 and the upper piston plate 13 are in surface-to-surface contact, which can improve the rotational stability.
[0037] The upper piston plate 13 is recessed on the side facing away from the rotating plate 12 to form a concave spherical surface, while the lower piston plate 14 is convex on the side facing the upper piston plate 13 to form a convex spherical surface. The area of the concave spherical surface of the upper piston plate 13 is smaller than the area of the convex spherical surface of the lower piston plate 14. The upper piston plate 13 and the lower piston plate 14 constitute the first spherical rotational friction pair of the lifting-type opening bridge vibration damping support 10. It is easy to understand that by using the surface-to-surface contact of the spherical surface, while ensuring rotational stability, the upper piston plate 13 can also rotate in all directions on the lower piston plate 14, satisfying the rotation angle requirements of the lifting-type opening bridge in all directions. At the same time, when the lifting-type opening bridge vibrates in the longitudinal direction due to external force, the rotating plate 12 can rotate relative to the upper piston plate 13 in the longitudinal direction, and the upper piston plate 13 can also rotate relative to the lower piston plate 14 in the longitudinal direction. The rotation directions of the rotating plate 12 and the upper piston plate 13 are opposite, thus forming two sets of relative rotations to further reduce the vibration frequency of the lifting-type opening bridge in the longitudinal direction.
[0038] Please refer to Figure 3As shown, since the convex surfaces of the lower piston plate 14 and the upper piston plate 13 are arranged in the same direction, and the rotating plate 12 rotates relative to the upper piston plate 13, when the upper piston plate 13 rotates to the low point of the lower piston plate 14, the rotating plate 12 rotates towards the side away from the upper piston plate 13, and the height of the side of the rotating plate 12 away from the upper piston plate 13 is higher than the height of the side of the rotating plate 12 close to the upper piston plate 13. In this way, under the action of potential energy, the rotating plate 12 and the upper piston plate 13 can achieve reciprocating rotation to extend the structural period of the lifting type opening bridge vibration damping support 10. At the same time, after the external force disappears, under the action of potential energy, the heights of both sides of the rotating plate 12 remain consistent. At this time, the upper piston plate can rotate to the highest point of the lower piston plate to realize the reset of the rotating plate 12 and the upper piston plate 13.
[0039] The fixed plate 15 is recessed on the side away from the lower support plate 16 to form a concave cylindrical surface, and the generatrix of the concave cylindrical surface extends in the direction of the bridge. The lower piston plate 14 is provided with a convex cylindrical surface that cooperates with the fixed plate 15 on the side close to the fixed plate 15. The fixed plate 15 and the lower piston plate 14 constitute the second cylindrical rotating pair of the lifting type opening bridge vibration damping support 10. Specifically, the generatrix of the cylindrical surface of the lower piston plate 14 extends in the direction of the bridge, that is, the radial rotation direction of the lower piston plate 14 relative to the fixed plate 15 is in the direction of the bridge. For example, when an earthquake occurs, the bridge is subjected to a force in the direction of the bridge. The lower piston plate 14 can rotate relative to the fixed plate 15 in the direction of the bridge under the action of inertia to resist the vibration in the direction of the bridge. At the same time, since the lower piston plate 14 and the upper piston plate 13 have spherical rotating surfaces, the upper piston plate 13 can rotate relative to the lower piston plate 14 in the direction of the bridge. Moreover, the rotation directions of the upper piston plate 13 and the lower piston plate 14 in the direction of the bridge are opposite to those of the lower piston plate 14, so as to form two sets of relative rotation, further reducing the vibration frequency in the direction of the bridge.
[0040] Please refer to Figure 4 As shown, since the rotating surface of the fixed plate 15 is concave, when the lower piston plate 14 rotates to the high point of the concave surface of the fixed plate 15, the lower piston plate 14 can convert kinetic energy into potential energy, and under the action of potential energy, rotate towards the low point of the concave surface to extend the structural period of the lifting type opening bridge vibration damping support 10. Furthermore, when the force in the transverse bridge direction disappears, the lower piston plate 14 can be reset under the action of potential energy.
[0041] The lifting-type opening bridge vibration damping bearing 10 also includes a tensile structure 17. At least two types of tensile structures 17 are provided, one on the periphery and the other inside the lifting-type opening bridge vibration damping bearing 10. These tensile structures 17 are used to position the lifting-type opening bridge vibration damping bearing 10, preventing it from losing stability after the bridge beam is removed, thus meeting the lifting requirements of the bridge beam. It is easy to understand that providing at least two types of tensile structures 17 increases the diversity of the tensile structures 17, and placing the tensile structures 17 on the outside and inside of the lifting-type opening bridge vibration damping bearing 10 creates multi-point tensile resistance, ensuring the stability of the lifting-type opening bridge vibration damping bearing 10.
[0042] In one embodiment, a limiting rod 171 extends downward from the side of the upper piston plate 13 near the lower piston plate 14. The lower piston plate 14 is provided with a limiting hole 141, which penetrates the lower piston plate 14 to form a limiting cavity 142. The limiting rod 171 is used to insert into the lower limiting cavity 142. It is understandable that, since the upper piston plate 13 and the lower piston plate 14 are movably connected, and the limiting rod 171 is inserted into the limiting cavity 142, when the upper piston plate 13 is subjected to external force, the upper piston plate 13 drives the limiting rod 171 to rotate. At this time, the lower piston plate 14 can resist the rotation of the limiting rod 171 through the limiting cavity 142 and apply the limiting rod 171 resistance force to prevent the upper piston plate 13 from falling off the lower piston plate 14. At the same time, compared with setting the limiting block on the periphery of the lower piston plate 14, the upper piston plate 13, since the limiting rod 171 and the limiting cavity 142 are set in the upper piston plate 13 and the lower piston plate 14, can avoid the limiting rod 171 from being damaged by external factors. In addition, hiding the limiting rod 171 in the limiting cavity 142 can also improve the overall structure.
[0043] Furthermore, the limiting rod 171 is cylindrical to improve its axial resistance to radial loads. Of course, the lifting-type opening bridge vibration damping support 10 of the present invention is not limited to this; in other embodiments, the limiting rod 171 may also be prismatic.
[0044] Furthermore, the diameter of the limiting hole 141 is larger than the diameter of the limiting rod 171. This design allows the limiting hole 141 to have a length greater than the diameter of the limiting rod 171 in both the longitudinal and transverse directions, enabling the limiting rod 171 to have variable stroke in both directions. Simultaneously, designing the limiting hole 141 as a circular hole facilitates the drilling requirements on the lower piston. It is worth noting that the lifting-type opening axle vibration damping support 10 of the present invention is not limited to this; in other embodiments, the limiting hole 141 can also be designed in a cross shape, with the two straight lines of the cross pointing towards the longitudinal and transverse directions, respectively.
[0045] In one embodiment, a connecting disc 172 is threaded to one end of the limiting rod 171 near the lower piston plate 14. The diameter of the connecting disc 172 is larger than the diameter of the limiting hole 141. The limiting rod 171 and the connecting disc 172 form a tensile structure 17. It is easy to understand that the connecting disc 172 can prevent the upper piston plate 13 from separating from the lower piston plate 14 when the lifting-type opening bridge vibration damping support 10 is subjected to forces in the vertical direction of the bridge. On the other hand, when the beam of the lifting-type opening bridge is lifted, the presence of the connecting disc 172 can prevent the opening bridge vibration damping support from losing stability after the beam leaves.
[0046] The lower piston plate 14 has a rotating cavity 143, which partially penetrates the lower piston plate 14 and forms an opening 1431 on the side of the lower piston plate 14 away from the upper piston plate 13. The diameter of the opening 1431 is larger than the diameter of the connecting disc 172. The rotating cavity 143 has a rotating wall 1432, which is located close to the upper piston plate 13. The rotating wall 1432 is penetrated by a limiting hole 141 to achieve communication between the rotating cavity 143 and the limiting cavity 142. The connecting disc 172 can rotate on the rotating wall 1432. In this embodiment, the rotating wall 1432 is located at the top of the rotating cavity 143. In actual installation, the connecting disc 172 can be threadedly separated from the limiting rod 171. After the limiting rod 171 is inserted into the rotating cavity 143, the connecting disc 172 is threadedly connected to the limiting rod 171 from the opening 1431 to achieve the connection of the connecting disc 172 to the rotating wall 1432.
[0047] In one embodiment, the rotating wall 1432 is recessed towards the upper piston plate 13 to form a concave spherical surface, and the connecting disc 172 has a convex spherical surface adapted to the rotating wall 1432, and the spherical area of the connecting disc 172 is smaller than the spherical area of the rotating wall 1432. The rotating wall 1432 and the connecting disc 172 constitute the second spherical rotational friction pair of the lifting-type opening bridge vibration damping support 10. It is easy to understand that by setting the contact surface of the rotating wall 1432 and the connecting disc 172 as a spherical surface, the frictional force between the rotating wall 1432 and the connecting disc 172 can be reduced while satisfying rotation in all directions. At the same time, the moment of inertia of the upper piston plate 13 is increased by the connecting disc 172 and the limiting rod 171, so as to improve the rotation period of the lifting-type opening bridge vibration damping support of the present invention, thereby improving the vibration damping effect.
[0048] In one embodiment, the tensile structure 17 includes two first side plates 173 disposed on the rotating plate 12 and two first mating plates 174 disposed on the upper piston plate 13. The first side plates 173 are L-shaped, and the two first side plates 173 are respectively connected to both sides of the rotating plate 12 along the bridge direction, with the openings 1431 of the two first side plates 173 facing the inner side of the rotating plate 12. The first mating plates 174 protrude from both sides of the upper piston plate 13 along the bridge direction towards the outer side of the upper piston plate 13. It is easy to understand that the first side plates 173 and the first mating plates 174, through their cooperation, can position the rotating plate 12 to prevent the rotating plate 12 from losing stability after the beam is removed, and at the same time, can also provide a guiding function for the rotating plate 12.
[0049] Furthermore, the connecting surfaces of the first side plate 173 and the first mating plate 174 are cylindrical, and the first side plate 173 and the first mating plate 174 constitute the third cylindrical rotating pair of the lifting-type opening bridge vibration damping support 10 of the present invention. Specifically, the concave and convex directions of the first side plate 173 and the first mating plate 174 are in the same direction as the rotating plate 12 and the upper piston plate 13, so as to avoid interference with the rotation of the rotating plate 12.
[0050] The tensile structure 17 includes two second side plates 175 disposed on the fixed plate 15 and two second mating plates 176 disposed on the lower piston plate 14. The second side plates 175 are U-shaped, and the two second side plates 175 are respectively connected to both sides of the fixed plate 15 in the transverse bridge direction, with the openings 1431 of the two second side plates 175 facing the inside of the rotating plate 12. The second mating plates 176 protrude from both sides of the lower piston plate 14 in the transverse bridge direction toward the outside of the upper piston plate 13. It is easy to understand that through the cooperation of the second side plates 175 and the second mating plates 176, the lower piston plate 14 can be positioned to prevent the lower piston plate 14 from losing stability after the beam is removed. At the same time, it can also provide a guiding function for the lower piston plate 14.
[0051] The connecting surfaces of the second side plate 175 and the second mating plate 176 are cylindrical, and the second side plate 175 and the second mating plate 176 constitute the fourth cylindrical rotating pair of the lifting-type opening bridge vibration damping support 10 of the present invention. Specifically, the concave and convex directions of the second side plate 175 and the second mating plate 176 are in the same direction as the fixed plate 15 and the lower piston plate 14, so as to avoid interference with the rotation of the lower piston plate 14.
[0052] In one embodiment, the lifting-type opening bridge vibration damping support 10 is further provided with wear-resistant plates 18. The wear-resistant plates 18 include cylindrical wear-resistant plates and spherical wear-resistant plates. Four cylindrical wear-resistant plates are provided, respectively located at the connection points of the first, second, third, and fourth cylindrical rotating joints. Two spherical wear-resistant plates are provided, respectively located at the connection points of the first and second spherical rotating joints. The wear-resistant plates 18 are used to improve wear resistance; by placing the wear-resistant plates 18 between the aforementioned rotating joints, damage to the rotating joints due to prolonged rotation can be prevented.
[0053] Furthermore, the wear-resistant plate 18 is made of modified polyethylene. It's easy to understand that, while ensuring wear resistance, modified polyethylene also possesses excellent self-lubricating properties. That is, after friction, the crystals of the modified polyethylene plate easily peel off along the crystal layers, forming an extremely thin crystalline film on the friction surface, significantly reducing the coefficient of friction and thus lowering frictional force. At the same time, modified polyethylene is inexpensive, which can reduce the manufacturing cost and subsequent maintenance cost of the lifting-type opening bridge vibration damping support 10.
[0054] In one embodiment, the elastic buffer material is rubber. It is easy to understand that, compared to springs, rubber, while maintaining elasticity, also has better tear resistance, thus resisting shear forces during the opening and closing of the beam. Furthermore, the rubber has a variable shape, not only able to completely fill the receiving cavity 121, but also able to be cut to different sizes according to the size of the receiving cavity 121 to fit beams of different masses. In addition, rubber also has good wear resistance to meet the long-term lifting requirements of the lifting-type opening bridge.
[0055] In one embodiment, the vibration damping support 10 of the lifting-type opening bridge also includes a beam connecting plate 19, which is fixedly connected to the beam. The side of the beam connecting plate 19 facing away from the beam is roughened. Specifically, the beam connecting plate 19 is fixedly connected to the beam by welding. During the opening and closing of the lifting-type opening bridge, the beam connecting plate 19 is movably connected to the upper support plate 11 through the roughened surface. Due to the large friction of the roughened surface, it can accommodate the misalignment of the beam while avoiding forces acting on the beam in the planar direction.
[0056] This invention also provides a lifting-type opening bridge, which includes a beam and a vibration damping support 10. The specific structure of the vibration damping support 10 is as described in the above embodiments, and the vibration damping support 10 is used to support the beam. Since this opening bridge adopts all the technical solutions of all the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated further here. Those skilled in the art will readily understand that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A lifting-type opening bridge vibration damping support, characterized in that, include: The upper support plate, rotating plate, upper piston plate, lower piston plate, fixed plate, and lower support plate are connected in sequence. The rotating plate has a recessed cavity on the side near the upper support plate, which is used to accommodate an elastic buffer. The upper support plate has an insertion end that inserts into the cavity. The rotating plate has a recessed cylindrical surface on the side away from the upper support plate, and the generatrix of the recessed cylindrical surface of the rotating plate extends in the transverse bridge direction. The upper piston plate has a convex cylindrical surface on the side near the rotating plate that mates with it. The rotating plate and the upper piston plate constitute the first cylindrical rotating pair of the lifting-type opening bridge vibration damping support. The upper piston plate is located on the side away from the upper support plate. One side of the rotating plate is recessed to form a concave spherical surface, and the side of the lower piston plate near the upper piston plate is protruded to form a convex spherical surface. The area of the concave spherical surface of the upper piston plate is smaller than the area of the convex spherical surface of the lower piston plate. The upper piston plate and the lower piston plate constitute the first spherical rotational friction pair of the lifting-type opening bridge vibration damping support. The side of the fixed plate away from the lower support plate is recessed to form a concave cylindrical surface. The generatrix of the concave cylindrical surface of the fixed plate extends in the direction along the bridge. The side of the lower piston plate near the fixed plate is provided with a convex cylindrical surface that cooperates with it. The fixed plate and the lower piston plate constitute the second cylindrical rotational pair of the lifting-type opening bridge vibration damping support. The tensile structure has two types, which are respectively located on the periphery and inside of the lifting-type opening bridge vibration damping support; When the bridge is subjected to a force in the transverse direction, the lower piston plate rotates relative to the fixed plate in the transverse direction under the action of inertia to resist the vibration in the transverse direction. Since the lower piston plate and the upper piston plate form the first spherical rotational friction pair, the upper piston plate can rotate relative to the lower piston plate in the transverse direction. Moreover, the rotation directions of the upper piston plate and the lower piston plate in the transverse direction are opposite, so as to form two sets of relative rotation, further reducing the vibration frequency in the transverse direction.
2. The lifting-type opening bridge vibration damping support as described in claim 1, characterized in that, The upper piston plate extends downwards with a limiting rod on the side close to the lower piston plate. The lower piston plate is provided with a limiting hole, and the diameter of the limiting hole is larger than the diameter of the limiting rod. The limiting hole penetrates the lower piston plate to form a limiting cavity, and the limiting rod is used to insert into the limiting cavity.
3. The lifting-type opening bridge vibration damping support as described in claim 2, characterized in that, The limiting rod is threaded to a connecting disc at one end near the lower piston plate. The diameter of the connecting disc is larger than the diameter of the limiting hole. The limiting rod and the connecting disc form a tensile structure. The lower piston plate has a rotating cavity, which partially penetrates the lower piston plate and forms an opening on the side of the lower piston plate away from the upper piston plate. The diameter of the opening is larger than the diameter of the connecting disc. The rotating cavity has a rotating wall, which is located close to the upper piston plate. The limiting hole penetrates the rotating wall to enable communication between the rotating cavity and the limiting cavity. The connecting disc can rotate on the rotating wall.
4. The lifting-type opening bridge vibration damping support as described in claim 3, characterized in that, The rotating wall is recessed towards the upper piston plate to form a concave spherical surface. The connecting disc has a convex spherical surface that matches the rotating wall, and the spherical area of the connecting disc is smaller than the spherical area of the rotating wall. The rotating wall and the connecting disc constitute the second spherical rotating friction pair of the lifting-type opening bridge vibration damping support.
5. The lifting-type opening bridge vibration damping support as described in claim 4, characterized in that, The tensile structure includes two first side plates disposed on the rotating plate and two first mating plates disposed on the upper piston plate. The first side plates are L-shaped, and the two first side plates are respectively connected to both sides of the rotating plate along the bridge direction, with the openings of the two first side plates facing the inside of the rotating plate. The first mating plates protrude from both sides of the upper piston plate along the bridge direction toward the outside of the upper piston plate. The connecting surface of the first side plates and the first mating plates is cylindrical. The first side plates and the first mating plates constitute the third cylindrical rotating pair of the lifting-type opening bridge vibration damping support. The tensile structure further includes two second side plates disposed on the fixed plate and two second mating plates disposed on the lower piston plate. The first side plates are U-shaped, and the two second side plates are respectively connected to both sides of the fixed plate in the transverse bridge direction, with the openings of the two first side plates facing the inside of the rotating plate. The second mating plates extend from both sides of the lower piston plate in the transverse bridge direction towards the outside of the upper piston plate. The second side plate and the second mating plate are connected by a cylindrical surface, and the second side plate and the second mating plate constitute the fourth cylindrical rotating pair of the lifting-type opening bridge vibration damping support.
6. The lifting-type opening bridge vibration damping support as described in claim 5, characterized in that, The lifting-type opening bridge vibration damping support is also provided with wear-resistant plates, which include cylindrical wear-resistant plates and spherical wear-resistant plates. There are four cylindrical wear-resistant plates, which are respectively located at the connection points of the first cylindrical rotating joint, the second cylindrical rotating joint, the third cylindrical rotating joint, and the fourth cylindrical rotating joint. There are two spherical wear-resistant plates, which are respectively located at the connection points of the first spherical rotating joint and the second spherical rotating joint.
7. The lifting-type opening bridge vibration damping support as described in claim 6, characterized in that, The wear-resistant plate is made of modified polyethylene.
8. The lifting-type opening bridge vibration damping support as described in any one of claims 1 to 7, characterized in that, The elastic buffer is made of rubber.
9. The lifting-type opening bridge vibration damping support as described in any one of claims 1 to 7, characterized in that, The lifting-type opening bridge vibration damping support is also provided with a beam connecting plate, which is fixedly connected to the beam, and the side of the beam connecting plate facing away from the beam is set as a rough surface.
10. A lifting-type opening bridge, characterized in that, include: Beam structure, and The lifting-type opening bridge vibration damping support according to any one of claims 1 to 9, wherein the lifting-type opening bridge vibration damping support supports the beam body.